sheaf hseaf sehaf eshaf hesaf ehsaf shaef hsaef sahef ashef hasef ahsef seahf esahf saehf asehf eashf aeshf heasf ehasf haesf ahesf eahsf aehsf shefa hsefa sehfa eshfa hesfa ehsfa shfea hsfea sfhea fshea hfsea fhsea sefha esfha sfeha fseha efsha fesha hefsa ehfsa hfesa fhesa efhsa fehsa shafe hsafe sahfe ashfe hasfe ahsfe shfae hsfae sfhae fshae hfsae fhsae safhe asfhe sfahe fsahe afshe fashe hafse ahfse hfase fhase afhse fahse seafh esafh saefh asefh easfh aesfh sefah esfah sfeah fseah efsah fesah safeh asfeh sfaeh fsaeh afseh faseh eafsh aefsh efash feash afesh faesh heafs ehafs haefs ahefs eahfs aehfs hefas ehfas hfeas fheas efhas fehas hafes ahfes hfaes fhaes afhes fahes eafhs aefhs efahs feahs afehs faehs
Note: these 'words' (valid or invalid) are all the permutations of the word sheaf. These words are obtained by scrambling the letters in sheaf.